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ATTORNEY u |vToR @EL @DGE A. Y. BODGE BRAKE MECHANISM Filed Aug. 17, 1925 arch l.

I la will be apparen'tvfroni the4 following desc1ip" radrum,-a 'plurality of floating s hoesengage- 70V i 25 drum 10 and a backing plate 12, between able as a unit in either direction with the S0 40 shoe 16.

Patented iflar. i?, il fi; FFQ.

ADIEL Y. DODGE, F SOUTH BEND, INDIANA, ASSGOR T0 BENDIX BRAKE COMPANY,.' 0F CHICAGO, ILLINOIS, A CORPORATION 0F ILLINOIS.

BRAKE MECBANISM. Application led August 17, 1925. Serial No. 50,858,

. This invention relates to brakes, and is serving to guide the bracket and shoes. I illustrated as embodied in a double-wrapprefer to mount onthese posts a plate 50 ping or duo-servo automobile brake. serving as a steady-rest to position the shoes An object of the invention is to provide imlaterally. I

proved means for positioning the brake It will be seen thatfthis constitutes a 6o shoes, and preferably including a novel eX-. novel floating expansion joint, adjustable parision joint shifting in one direction or from outside the brake.- While one embodi# the other with the shoes according to the ment only hasbeen described, itis not my direction of drum rotation and shown inthe intention to limit the scope of the inven form of a double c m between the ends of tion to that particular'embodiment-or other- 65 the shoes. ,j wise than by the terms of the appended This and-other featuresof the' invention, claims.-

including various novel combinations of; I'fclaimr parts and desirable particularconstructions, 155A brake comprising, in combination,

tion of one illustrative embodiment-shown .able with the drum and shifting to anchor in the accompanying'-d-rawing,in which: en one shoe when the drum is turning in Fig. l'is'a vertical vsection throughzthe one-.direction and on the-othershoe when brake, just inside the wheel,-showingthe the `drum is turning in the other direction, shoes in side elevation; and and a floating joint connecting the'shoes and 75A "Fig 2`is a horizontal section on the line including a cam between the ends ofthe 2 2 of Fig. 1, showing the novel expansion shoes and a part lrigid with the cam -Which joint. Y is operable to turn the cam, the entire joint The particular brake shown includes a including the cam and said part being shifti which. are arranged interchangeable shoes shoes. j 14 and 16. Between the upper ends of the 2. A brake comprising, in combination, a shoes is a oating cam 18, or other bra-kedrum a backing plate, a plurality of floatapplying means, and a stationary anchor ing shoes engageable with the drum and 20, arranged to take the braking torque of shifting to anchor on one shoe when the 85 both shoes from shoe 16' when the drum drum is turning in one direction and on is turning clockwise, andl lfrom shoe 14 the other shoe when the drum is turning in when the drum is turning counter-clockthe other direction, and a floating joint conwise. The shoes are urged away from the necting the shoes and including a cam bedrum by a springor pair of springs 22. tween the ends of thevshoes and a shaft 9o Shoe 14 is urged, by a spring l24, against rigid with the cam which is operable to turn an adjustable eccentric stop 26 near its opthe cam and which extends through a relaposite end,.while if desired a similar spring tively large opening in the backing plate, and stop 28 and 30 maybe provided for the entire joint including the cam and said shaft being shiftable as a' unit in either di- 95 lBetween the lower or opposite ends of rection with the shoes. the shoes is an angularly-adjustable cam 32, '3.'A brake comprising, in combination, a carried by a fioating bracket 34, and locked plurality of shoes, an singularly-adjustable in any desired position of angular ad'ustshaft having acam between the shoes, means 45 ment by a nut 36. The threaded end o the to lock the shaft in any desired position of 100 shaft portion of cam 32 projects through an angular adjustment, and means for supopening or slot 38 in the backing plate, to porting the shoes in such a manner as to permit the bracket to float as described, permit the shaft and cam to yfloat with the while a pin 40 carried b the backing plate shoes. 5o 12 ma project throng a radial slot 42 v 4, A brake comprising, in combination, a 105 in thel racket, to provide a iloating pivotal drum, a plurality of floating shoes, an anconnection. gularly-adjustable shaft having a cam be- A pair of posts 44 carried by backing -tween the shoes, means to lock the shaft in plate 12 roject through slots 46 in bracket any desired position of angular adjustment, 34, 'and t rough slots 48 in the shoes, thus means for supporting the shoes in such a 110 other direction.

5. A brake comprising,in combination, a plurality of shoes, a cam between the ends of the shoes, means to hold the cam in any position of adjustment, and spring means olding the shoes against the cam, the cam and said means being free to float as a unit with the shoes. Y

6. A brake comprising, 'in combination, a drum, a plurality of shoes, a cam between the ends of the shoes, means to hold the cam in any position of adjustment, spring means holding the shoes against the cam, the cani and said means being free to float as a unit with the shoes, and means for orcin the oppbsite ends of the shoes against the rum.v

7, A brake comprising, in combination, a drum, a plurality of shoes, a cam between the ends of the shoes, means to hold the cam inany position of adjustment, spring' means holding the shoes against the cam, the cam being free to float with the shoes, means for jforcing the opposite ends of the shoes against the drum, means for taking the braking torque from either of said opposite ends, and means for centering the'eain and the adjacent shoe ends when the brake is released.

'8. A brake comprising, in combination, a drum, a plurality of shoes, a cam between the ends of the shoes, means to hold the cam in any position of adjustment, spring means holding the shoes against the cam, the cam being tree to {ioat with the shoes, means for forcing the opposite ends of the shoes against the drum, tween said opposite ends for taking the braking torque from either of them, and

means for centering the cam and the adja' cent shoe ends when the brake is released.

9. A brake comprising, in combination, a drum, a plurality of shoes, `means for forcing the ends oi' the shoes against the drum, a pivoted bracket adjacent the oppositie ends of the shoes, and an expansion joint for saidppposite ends including an adjustable cam having a sha-ft journalled in the bracket. l0. A brake comprising, in combination., a drum, a' plurality of shoes, means for forcing the ends of the shoes against the drum, a mevable bracket adjacent the opposite ends ei' the shoes, and a double cam belween said opposite ends and carried by the il. A bialecomprising, in combination, a drum, a pli'irality of shoes, means tei' tore ing the ends of the slices against the drum, a ioa'iiigbracket adjacent opposite ei "is elf the shoes, a douhie cani carried by the a stationary anchorbe bracket between said o posite ends and whichA is adjustable angu arly to force said ends apart, and means for holding the cam in adjusted position.

12. A brake comprising, in combination, a drum, a plurality ofshoes, means for forcing the ends of the shoes against the drinn, a radially and circumferentially `movable bracket adjacent the oppositebnds of the shoes, adouble cam carried by the bracket between said opposite ends and which is adjustable angularly to force said ends apart, means for holding the cam in adjusted position, and spring means holding the shoes against the cam.

13. A brakeV comprising, 'in combination, a drum, a plurality lof shoes, means for foreing the ends of the shoes against the drum, a radially and circumferentially movable bracket adjacent the opposite ends of the shoes, a double cam carried by the bracket between said opposite ends Aand which is adjustable angularly to force 'said ends apart, means for holding the cam in adjusted', position, spring means holding the shoes against the cam, and a stop cooperating with the spring to determine the idle positions of the ioes.

14. A brake comprising, in combination, a drum, a plurality of shoes, brake-applying means and torque-taking means acting on the saine ends of the shoes, astop engaging one of the shoes near its opposite end, lan expaiision'joint connecting the shoes, and springs normally holding the shoes in idle positions determined by the torque-takingy means and the stop and the expansion joint.

15. A brake-comprising, in combination, a drum, a backing plate at the open side of the drum, shoes between the drum and backingfplate, and a oatingexpansion joint between adjacent. ends of the shoes includjing'a cani having an integraLshat passing through and adjustable from outside the backing plate.

. 16. A brake' comprising, in combination, a drum, a backing plate at the open side of the drum, shoes between the drum and backing plate, and a floating expansion joint between adjacent ends of the shoes ineluding a cani between said ends and means passing through the. backing plate for adjusting the cani and which ioats with said cam and shoe ends.

17. A breite comprising, in combination, a drinn, a backing .plate at the open side oi' the drum, shoes between the drum and backing plate, between adjacent ends of the shoes includ ing a. cani iioiiiV ont n, the sa malte oin'iiiY in. a hat i Late 1 and a iioating expansion joint having a shaft rigid therewith Y the shoes and the monete drum and baclnng plate, a bracket pivoted on the backing plate, and an expansion joint for adjacent ends of the shoes carried by the bracket and adjustable from outside the backin plate.

19. brake comprising, a drum, a backing plate, drum and backing in combination, shoes between the plate, a bracket between backing plate and shiftable with the shoes with respect to the backing plate, and an expansion joint for adjacent ends' of the. shoes carried by the bracket.

20. A brake comprising, in combination, a pair of shoes having adjacent movable ends formed with openings, a support having a joint for said ends and parts projecting through the openings, and a member carried by said projecting parts, the shoe ends being onfined between the support and said mem- 21. A brake comprising, in combination, a drum, a fixed anchor, a floating friction device Within ends and anchoring on one of said ends against said anchor when the drum is turnin in one direction and on the other of said ends against the anchor when the drum is turning in the other direction, and a pair of stops spaced approximately 120 on each side of said` anchor and cri-operating with said anchor in determining the released position of said friction device.

22. A brake comprising, in combination, a drum, a fixed anchoma floating friction device Within the drum having separable ends and anchoring on one of said ends against said anchorA when the drum is turning in one direction and on the other ci Said ends against the anchor when the drum is turning in the other direction, and a pair of stops spaced ap roxiniateiy 120 on each side of said anc or and cfa-operating with the drum having separable.

said anchor in determining the released position of said friction device, at least one of said stops being adjustable.

23. A brake comprising, in combination, a drum, a fixed anchor, a floating friction device Within the drum having separable ends and anchoring on one of said ends against said anchor when the drum is turning in one direction and on the other of said. ends against the anchor turning in the other direction, and a pair of stops spaced approximately 120 on each side of said anchor and co-operating with said anchor in determining the released position of said friction device, at least one of said Stops being an adjustable eccentric.

24. A brake comprising, in combination, a drum, a fixed anchor, a floating friction device within the drum havin separable ends and anchoring on one o? said ends against said anchor when the drum is turning in one direction and on the other of said ends against the anchor when the drum 1s turning in the other direction, and a when the drum isl pair of stops spaced approximately on each device including an adjustmentl for increasing its cicctive length to compensate for wear.

25. A brake comprising, in combination, a floating friction device having adjacent separabie ends and provided with an ad'ustment' for increasing its effective lengt to compensate for wear', applying and anchoring means adjacent said ends, and stops ai ranged approximately 120 in opposite directions from said ends.

in testimony 4whereof l have hereunto signed my name.

ADIEL Y. DODGE.

side of said anchor and co-operating. with said anchor in determining the released? position of said friction device, said friction 

